Finding the Third Proportional to 296,355 and 423,485.25

Step by Step Solution

1. Step 1: Write the proportion equation
   296,355 : 423,485.25 = 423,485.25 : x
2. Step 2: Convert to fraction form
   296,355/423,485.25 = 423,485.25/x
3. Step 3: Cross multiply
   296,355x = 423,485.25 × 423,485.25
4. Step 4: Simplify right side
   296,355x = 179,339,756,967.56
5. Step 5: Solve for x
   x = 179,339,756,967.56/296,355
6. Step 6: Final answer
   x = 605,151.78